#ifndef IO_URING_MEMMAP_H#define IO_URING_MEMMAP_H struct page **io_pin_pages(unsigned long ubuf, unsigned long len, int *npages);void io_pages_free(struct page ***pages, int npages);int io_uring_mmap_pages(struct io_ring_ctx *ctx, struct vm_area_struct *vma,			struct page **pages, int npages); void *io_pages_map(struct page ***out_pages, unsigned short *npages,		   size_t size);void io_pages_unmap(void *ptr, struct page ***pages, unsigned short *npages,		    bool put_pages); void *__io_uaddr_map(struct page ***pages, unsigned short *npages,		     unsigned long uaddr, size_t size); #ifndef CONFIG_MMUunsigned int io_uring_nommu_mmap_capabilities(struct file *file);#endifunsigned long io_uring_get_unmapped_area(struct file *file, unsigned long addr,					 unsigned long len, unsigned long pgoff,					 unsigned long flags);int io_uring_mmap(struct file *file, struct vm_area_struct *vma); void io_free_region(struct io_ring_ctx *ctx, struct io_mapped_region *mr);int io_create_region(struct io_ring_ctx *ctx, struct io_mapped_region *mr,		     struct io_uring_region_desc *reg); static inline void *io_region_get_ptr(struct io_mapped_region *mr){	return mr->vmap_ptr;} static inline bool io_region_is_set(struct io_mapped_region *mr){	return !!mr->nr_pages;} #endif